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Medium Performance

HIGH SPECIFICITY OF THE MAUVE COLOUR

1 Clear differentiation of Yersinia among background flora

Background flora, such as Citrobacter, often has a Yersinia-like red aspect on CIN agar
which generate a heavy routine workload on false positive results. Thanks to CHROMagar
Y.enterocolitica, this unnecessary workload will be eliminated as only pathogenic Yersinia
enterocolitica colonies will grow mauve.

In traditional culture media like CIN agar, pathogenic and non-pathogenic biotypes have the
same aspect. On CHROMagar Y.enterocolitica, the pathogenic biotypes grow in a distinctive
mauve colour, differentiated at a glance, from the non pathogenic which will grow metallic
blue.

HIGH SELECTIVITY: REDUCTION OF BACKGROUND FLORA

Background flora is dramatically reduced on CHROMagar Y.enterocolitica allowing an easy
reading of the plates. The laboratory will concentrate its efforts and resources only on suspect
colonies that have a real potential of pathogenicity.

Medium Description

CHROMagar™, Rambach™, AquaCHROM™ are trademarks created by Dr. A. Rambach.

All pictures of our products are CHROMagar property and should not be used without our acceptance.

Last Update: 26-Oct-2017

Focus on Yersinia Enterocolitica

Among the Yersinia genus, Yersiniaenterocolitica is one of the most common food borne
pathogen. In several countries, Y.enterocolitica has eclipsed Shigella and approaches Salmonella and Campylobacter as the predominant cause of acute bacterial gastroenteritis. Its ability to
grow at refrigeration temperature makes it an increasing concern in terms of food safety. This
germ most commonly affects young individuals. However, only a few strains of Y.enterocolitica cause illness in humans. Those pathogenic Y.enterocolitica strains belong to biotypes 1B, 2, 3,
4, and 5, whereas biotype 1A strains are non-pathogenic and widespread in the environment.
The major animal Y.enterocolitica reservoir causing illnesses are pigs.